Locking mechanism



H. W. CORNFNG.

LOCKING MECHANISM.

APPLICATION FILED JAN.27,

Patented A91: 392

2 SHEETS-SHEET 1.

I INVQNTOR Hi5 A TTORHEY HENRY V7. CORNING, 0F CLEVELAND, OHIO.

LOUKING MECHANISM.

Specification of Letters Patent,

Patented Apr. 20, 1920.

Application filed Janua y 27, 1920. Serial No. 354,4:53.

To all whom it may concern:

Be it known that I, Hnwnr W. CURNING, a citizen of the United States,and resident of Cleveland, in the county of Cuyahoga and State of Ohio,have invented certain new and useful improvements in Locking Mechanism,of which the following is a specificw tion.

This invention relates to locking means that may be utilized in variousways, but which has been particularly adapted by me for use inconnection with portable sewing machine cabinet of the type comprising abase, on whichthe machine is directly mounted, and a cover i'einovablyconnected with said base. In some cabinets of this type, as forinstance, those adapted for containing rotary shuttle sewing machines,the base is provided with an opening in that end opposite the sewingmachine shuttle as a means for giving access thereto for the readyremoval and insertion of the bobbin and bobbin-case. Such opening isnormally closed by a suitable closure, in the form of a hinged door,which is adapted to be fastened in its closed position by a suitablelocking device.

it has been an object of this invention to provide a combination lockfor securing the said door in its closed position and the cover to thebase, which preferably will be operative to secure the cover to the baseand release the same therefrom upon the closing and opening,respectively, of the door.

Another object of the invention is the provision of such a combinationlock that will permit of the weight of the base and supported machinebeing taken by the cover-in those cases where it is desired to carry themachine about by means of the handle on the cover-independently of thedoor and consequently without strain thereon.

These, and other objects to be hereinafter ref rred to in the detaileddescription of the invention which follows, are attained by means of thenovel construction and com bination of parts embodying my invention asillustrated in the accompanying draw ings, in which--- Figure 1 is aperspective view of a sewi ing machine cabinet provided with a lookingmeans embodying my invention and showing the door or closure at thefront end of the cabinet base opened.

Fig. 2 is an enlarged detail, in section and elevation, the sectionbeing taken through the cabinet just to the rear of its front end andshowing in elevation the locking means between the base, cover and door,the latter being closed and the locking means locked.

Fig. 3 is a view of the corresponding parts looking from the exterior ofthe cabinet or the side opposite that shown in Fig. 2.

Fig. 4 is a view corresponding to that of Fig. 2, but showing the lockreleased to permit of the door being opened.

Fig. 5 is a view of the same looking from the exterior of the cabinet.

Fig. 6 is a section taken through the cabinet adjacent the rear endthereof, showing the fastening means between the base and cover at therear end of the cabinet.

Fig. 7 is a section taken vertically through one of the fastenings shownin Fig. 6, and

Fig. 8 is a transverse section through the latch bar carried by thehinged door, showing the notch in the lower hook extension thereof forreceiving the locking member of the locking device. 7

Similar reference characters indicate like parts in the several figuresof the drawings.

The cabinet to which. my invention is applied may be of any usual ordesired construction, the same as here shown comprising a base 2, onwhich a sewing machine such as indicated by dotted lines in 1 is adaptedto be supported, and a cover 3 designed to fit over said machine and 0onnect at its lower edge with said base.

The cover may be connected with the base at its rear end by any usual ordesired means, the means here used, is shown in Figs. 6 and 7 comprisingtwo pairs of latch.- ing members, each pair including a slotted member 4and an engaging hook member 5, one being attached to the cover and theother to the base by suitable fastening means, such as the screws 6, andboth being so arranged that by a slight longitudinal sliding movement ofthe cover on the base the said members may be either connected ordisconnected, as will be obvious by reference to Figs. 6 and 7 The base2' at its front end is formed with an'opening 10 opposite the shuttleend of the machine, which opening is adapted to be closed by a suitableclosure or door 11 hinged at one end to the base. As a means for lockingthis door in closed position, I

scribed. nection between the cover and base, that is, the latch bar 12connecting with members have attached to its inner side a latch bar 1'2,having at its lower end a hook extension 1 1, which is adapted, upon theclosing of the door, to engage a latch member 15 on the inner wall ofthe base by entering a slot 16 therein as shown. After the latch bar 12has so engaged the latch member 15, it is adapted to be locked in suchengagement by a pivoted lock bar 17, also carried by the door, which isturned downward at the inner side of the latch member 15 to engage thehook extension 14 within a notch 18 therein, as shown in Fig. 2. Thislock bar 17, being located at the inner side of the door 11, is securedto an operating spindle 20 which extends through an opening in the doorto a position at the face side of the latter,

where it is provided with a key-flange or handle 21 as a means forturning the same;

this key-flange being here shown as located in a counter-sink 22 in thedoor.

A. fixed pin 23 on the inner side of the door 11 serves as a means tolimit the re leasing movement of the lock bar 17, as shown in Fig. 4:,and a spring 2% bearing against a shoulder or pin 25 on the lock bar,serves as a means to yieldingly hold said lock bar to either its lookingor releasing position, as will be understood by reference to Figs. 2 andat.

The locking means for the door .11, as described, is also utilized, inaccordance with my invention, as part of a locking means for securingthe cover to the base at its front end. In carrying this part of myinvention into effect, I provide the latch bar 12 at its upper end witha hook extension 26, corresponding to the extension 1a at its lower end,and attach to the cover a slotted latch member 27, similar to the member15' on thebase, and so arrange these parts thatupon the closing of thedoor with the cover in place, the hook extensions M and 26 of the latchbar 12 will be caused to enter the slots of the respective latch members15 and 27 and so lock the cover to the base, such locking connectionbeing maintained by turning the lock bar 17 down to its position oflocking engagement with the lower hook extension 1 1, as before dc-VVith this means of locking conattached to said cover and baseindependent of the door 11, all strain on the latter is avoided; thesaid door in such combination acting merely as a carrier for thelatchbar in moving the same to and from its locking position. i

The latch bar 12 and cooperating latch members 15 and 27 may be securedto their respective supports by any suitable fastening means, the sameas here shown being fastened by screws 30, and the members 15 and 27being additionally fastened by having inwardly turned flanges engagingtheir supporting parts within grooves 31 therein, as shown.

The door 11 may be formed and attached to the base in any suitable way.As here shown, the door opening 10 is formed with undercut sides, as at35, and the door 1.1 is formed with end extensions 36 to fit into andengage with such sides as shown. With this construction, in case thelower or base latch member 15 becomes loosened or lost, the connectionbetween the base and cover will be maintained by the engagement of thedoor extensions 36 with the under-cut sides 35 of the opening 10, andthis without strain on the hinge connection 38 of the door. It will benoted that said hinge connection or pin 38 is placed in position fromthe under side of the base so as not to mar the uppei surface ofthe'latter.

That I claim is 1. In combination, a cabinet comprising two mainsections each having latching means and one being provided with anopening, a movable closure for said opening, and a latch member forconnection with the latching means of the cabinet sections to fasten thelatter together, said latch member being attached to the movable closureto be carried thereby to and from its operative latching position.

2. In combination, a cabinet comprising two main sections each havinglatching means and one being provided with an opening. a movable closurefor said opening, a latch member attached to said closure to be carriedthereby to and from a position of latching connection with the latchingmeans of the cabinet sections, and means for fastening said latch memberin connection with the cabinet sections. 2

3. In combination, a cabinet comprising two main sections each havinglatching means and one being provided with an opening. a closure forsaid opening hinged to one of the sections, and a latch member forconnection with the latching means of the cabinet sections to fasten thelatter together, said latch member being attached to the hinged closureto be carried thereby to and from its operative latching position.

4. In combination, a cabinet comprising two main sections each havinglatching means and one being provided with an opening. a movable closurefor said opening, latch member attached to said closure to be carriedthereby to and from a position of latching connection with the latchingmeans of the cabinet sections, and locking means also carried by saidclosure for fastening the lat h member in connection with the cabinetsections.

5. In combination, a cabinet comprising base and cover sections eachhaving an attached latch member and one having an opening in line withsaid members, a movable closure for said opening, and a latch bar forlatching connection with said latch members, said bar being attached tothe closure to be carried thereby to and from its operative latchingposition.

6. In combination, a cabinet comprising base and cover sections eachhaving an at tached latch member and one having an opening in line withsaid members, a hinged closure for said openin a latch bar for latchingconnection with said latch mem bers, said bar being attached to theclosure to be carried thereby to and from its opera tive latchingposition, and locking means for fastening the closure in closed positionand thereby the attached latch bar in operative latching connection withthe latch members.

7. In combination a cabinet com arisin 7 b base and cover sections eachhaving an attached latch member and one having an opening in line withsaid members, a hinged horizontally movable closure for said open ing, alatch bar for latching connection with. said latch members, said barbeing attached to the closure to be carried thereby to and from itsoperative latching position, a pivoted lock bar also carried by theclosure for fastening the latter in closed position and thereby theattached latch bar in operative latching connection with the latchmembers, and an operating member for said lock bar.

In combination, a cabinet comprising two main sections, one of which isprovided with an opening having under-cut sides and the other with alatch member opposite said opening, a movable closure for said openinghaving end extensions for engaging with the said under-cut sides of theopening, and a latch device attached to said closure for latchingconnection with the said latch mem ber of the cabinet section when theclosure is shut.

9. In combination, a cabinet comprising base and cover secti0ns,-thebase section being provided with an opening having undercut sides andthe cover section with a latch member opposite said opening, a hingedclosure for said opening having end extensions for engaging with thesaid under-cut sides of the opening, and a latch device attached to saidclosure for latching connection with the latch member of the coversection when the closure is shut.

10. In combination, a cabinet comprising base and cover sections, thebase section be ing provided with an opening having undercut sides andthe cover section with a latch member opposite said opening, a hingedclosure for said opening having end extensions for engaging with thesaid under-cut sides of the opening, a latch device attached to saidclosure for latching connection with the latch member of the cover whenthe closure is shut, and means For fastening the closure in shutposition.

Signed at Cleveland, in the county of Cuyahoga and State of Ohio this23rd day of December A. D. 1919.

HENRY IV. (JORNING.

